Professor Zhang Gaoke's research group of Wuhan University of science and technology and its collaborators developed the alkaline tungsten bronze photocatalysis material

Recently, Professor Zhang Gaoke's research group of Wuhan University of science and technology and its collaborators have developed alkaline tungsten bronze photocatalysis materials The research results were published in J am Chem SOC (DOI: 10.1021 / JACS 8b12928) under the title of "photocatalytic CO 2 conversion of M 0.33 WO 3 directly from the air with high selectivity: insight into full specification introduction mechanism" In recent years, the energy crisis and greenhouse effect are becoming more and more serious, which have become two major problems in the world As a green and environmental protection technology, photocatalysis can directly convert CO2 into the high value-added fuel needed by the society, thus becoming one of the effective ways to deal with the two major problems in the world However, how to effectively utilize the ultraviolet, visible and near-infrared light in the sunlight to directly reduce the low concentration of CO2 in the air as a single high value-added fuel under normal temperature and pressure has become a major challenge in the field of photocatalytic CO2 reduction The alkali metal tungsten bronze photocatalysis material researched and developed by Professor Zhang Gaoke of Wuhan University of science and technology and Associate Professor Wu Xiaoyong of his research group provides a new way to reduce the low concentration of CO 2 in the air directly into a single high value-added fuel under normal temperature and pressure by using ultraviolet, visible and near-infrared light In this study, tungsten bronze MWO 3 rich in unsaturated w 5 + and alkali metal ions was prepared by a special water release solvothermal method Under normal temperature, atmospheric pressure, ultraviolet, visible and near-infrared light irradiation, CO2 in the air can be directly converted into methanol with a single component Especially after 4 hours of near-infrared light irradiation, 4.32% of CO2 in the air can be reduced to methanol and the selectivity of methanol formation can reach 98% What's more interesting is that in the continuous flowing air atmosphere, the alkali metal tungsten bronze MWO 3 still has excellent CO 2 reduction effect, and the product is still methanol with single component The experimental and theoretical results show that the crystal structure of mxwo 3 is rich in unsaturated w 5 + and alkali metal ions occupying hexagonal tunnel holes, which make mxwo 3 have a very unique electronic structure, so that the polaron transition is enhanced, the CO 2 in the air is selectively adsorbed on its surface, while the o 2 is rarely adsorbed, and the CO 2 in the air can be further reduced The activation energy on its surface makes the photocatalytic reduction of CO2 in air possible This work provides a new possibility for the further practical application of artificial photosynthesis The first author of this paper is Li Yuan, Associate Professor Wu Xiaoyong and doctoral student of Wuhan University of science and technology, Professor Zhang Gaoke is the first corresponding author, Professor Zhao Yan of Wuhan University of science and technology and Professor Sun Yongfu of Chinese Academy of sciences have carried out cooperative research on calculation and experimental data test and analysis respectively, and they are the co corresponding authors The project is supported by NSFC (no.51472194, no.21777045 and no.51602237) and national 973 Project (2013cb632402).